17Cr2Ni2MoVNb齿轮钢中NbC析出相对晶粒长大的影响

doi:10.13251/j.issn.0254-6051.2023.01.021

金属热处理 ›› 2023, Vol. 48 ›› Issue (1): 122-126.DOI: 10.13251/j.issn.0254-6051.2023.01.021

17Cr2Ni2MoVNb齿轮钢中NbC析出相对晶粒长大的影响

宋少威^1,2, 董明振^2,3, 尉文超², 闫永明², 王毛球², 周芸¹

1.昆明理工大学材料科学与工程学院, 云南昆明 650093;
2.钢铁研究总院有限公司特殊钢研究院, 北京 100081;
3.湘潭大学材料科学与工程学院, 湖南湘潭 411201

收稿日期:2022-08-02 修回日期:2022-10-28 出版日期:2023-01-25 发布日期:2023-02-03
通讯作者: 周芸,教授,博士,E-mail: zyuncrystal@qq.com
作者简介:宋少威(1995—),男,硕士研究生,主要研究方向为渗碳齿轮钢,E-mail: ssw_kungong@163.com。

Effect of NbC precipitates on grain growth of 17Cr2Ni2MoVNb gear steel

Song Shaowei^1,2, Dong Mingzhen^2,3, Yu Wenchao², Yan Yongming², Wang Maoqiu², Zhou Yun¹

1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming Yunnan 650093, China;
2. Research Institute of Special Steels, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China;
3. School of Materials Science and Engineering, Xiangtan University, Xiangtan Hunan 411201, China

Received:2022-08-02 Revised:2022-10-28 Online:2023-01-25 Published:2023-02-03

摘要/Abstract

摘要： 通过析出相粗化模型、Zener晶粒长大模型和试验验证,分析NbC析出相对17Cr2Ni2MoVNb钢在高温下晶粒尺寸的钉扎影响。模型与试验结果表明,NbC的粗化与回溶会降低对晶粒长大的钉扎作用。当等温温度低于1000 ℃时,NbC析出相对奥氏体晶粒的长大可以起到有效抑制,随着等温温度的升高,NbC析出相对奥氏体长大的抑制作用越来越弱。

关键词: 17Cr2Ni2MoVNb钢, NbC析出相, 粗化模型, Zener晶粒长大模型, 晶粒长大

Abstract: Pinning effect of NbC precipitates on grain size of the 17Cr2Ni2MoVNb steel at high temperature was analyzed by means of the coarsening model, the Zener grain growth model and experimental verification. The model and experimental results show that the pinning effect of NbC on grain growth is reduced due to its coarsening and re-solution. When the isothermal temperature is lower than 1000 ℃, NbC precipitate relative to the growth of austenite grains can play an effective inhibition, with the increase of isothermal temperature, the inhibition of NbC precipitation relative to the growth of austenite becomes weaker and weaker.

Key words: 17Cr2Ni2MoVNb steel, NbC precipitates, coarsening model, Zener grain growth model, grain growth

中图分类号:

TG142.1

宋少威, 董明振, 尉文超, 闫永明, 王毛球, 周芸. 17Cr2Ni2MoVNb齿轮钢中NbC析出相对晶粒长大的影响[J]. 金属热处理, 2023, 48(1): 122-126.

Song Shaowei, Dong Mingzhen, Yu Wenchao, Yan Yongming, Wang Maoqiu, Zhou Yun. Effect of NbC precipitates on grain growth of 17Cr2Ni2MoVNb gear steel[J]. Heat Treatment of Metals, 2023, 48(1): 122-126.

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17Cr2Ni2MoVNb齿轮钢中NbC析出相对晶粒长大的影响

Effect of NbC precipitates on grain growth of 17Cr2Ni2MoVNb gear steel

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